Register and method of manufacturing the same



April 8, 1924. 1,489,410

(3. P. WOLFE REGISTER AND METHOD OF MANUFACTURING THE SAME I Filed Feb.20. 1922 fig Z v INVENTOR. By bzwfiwr/ ATTORNEYS.

Patented Apr. 8, 19.24.

, 1,489,410 Parent GFFHQE.

CALVIN P. "WOLFE, F MILWAUKEE, WISCONSIN, ASSIGNOR T0 L. J. MUELLER FUR-NACE COMPANY, 01 IVIILWAUKEE, WISCONSIN, A CORPORATION OF WISCONSIN.

REGISTER AND METI-IGD OF. MANUFACTURING SAME.

Application filed February 20, 1922. Serial No. 538,139.

To all whom it may concern:

Be it known that I, CALVIN P. VVoLrE, a

citizen of the United States, and resident of Milwaukee, in the countyof Milwaukee and State of Wisconsin, have invented new and usefulImprovements in Registers and Methods of Manufacturing the Same, ofwhich the following is a description, refer-' ence being had to theaccompanying draw- 1 ings, which are a part of this specification.

, This invention relates to improvements in registers and method ofmanufacturingthe same, and more particularly to registers for pipelessfurnaces.

i5 Pipeless furnaces are usually connected directly to the floor aboveto a largeregister portion 9, the inner annular flange portion mountedin the floor and which register is usually formed with an outer cold airintake portion and an inner warm air outlet portion, the cold air intakeopening usually surrounding the hot air outlet. The openings in theregister are of lattice formation and include a ring-like flangedportion which separates the intake passageway from the 2 outletpassageway. Considerable trouble has been experienced in casting theseregisters due to the fact that portions of the met al in cooling afterthe casting operation contract unequally, with the result that thering-like portion as well as other parts crack and produce an imperfectcasting which cannot be used.

It is one of the objects of the present invention to overcome the beforementioned objectionable features and provide a register and method ofmanufacturing the same which will eliminate defective registers due tocracks forming in the casting process.

A further object of the invention is to provide a register and method ofmanufacturing the same in which the mold in which the registers are castis adapted to separate portions of the metal at points of greateststrain and thus eliminate undue strains and cracking.

A further object of the invention is to provide a register and method ofmanufacturing the same which is simple and inexpensive to produce and iswell adapted for the purpose described.

l/Vith the above and other objects in view, the invention consists ofthe improved register and method of manufacturing the same, and itsparts and combinations as set forth in the claims, and all equivalentsthereof.

tions of a mold taken on line 33 of Fig.

2; and

Fig. 4 is a sectional detail view of the register taken on a largerscale.

Referring to the drawing, the numeral 8 indicates the improved registerwhich comprises the outer rectangular border or edge 10 which'dividesthe register into a cold air inlet portion 11', and a warm air outletportion 12. Said inlet and outlet portions 11 and 12 are formed, and theparts connected together by cross portions 13 of lattice formation.

The annular flange 1O is of considerable depth to permit the attachmentof the inner warm air pipe thereto, and in ordinary casting the flangewould crack at a number of different places and these cracks wouldextend in use. To overcome this difficulty the mold 14' at a pluralityof points is provided with pairs of copper, bronze, or other like metalstop strips 15, which are positioned in the mold transversely of themold groove 16 in which the flange 10 is formed. Said strips aresubstantially of the same depth as the flanges so that when molten metalis poured into the mold through the ordinary openings (not shown) of themold, the pairs of stop strips will prevent the flow of metal entirelyaround the annular flange with the result that the annular flange is ofsegmental form and the segments 10 as well as other portions of theregister may expand and contract without unduly straining the otherparts.

By providing pairs of stop strips the end portions of the molten metalforming the segments will not fuse together even though they fuse withthe respective pieces of each pair as said pieces will not fusetogether.

After the casting operation the flange segments will shrink in cooling.and the separated end portions will permit said shrinking withoutliability of cracking portions of the register.

When the casting is removed from the mold tobe finished the stop stripsare also removed or their edge portions are ground off so they will notshow in the finished casting, and the straight equally spaced radialcuts will have the appearance of forming part of the design of theregister.

From the foregoing description it will be seen that the register is ofvery simple construction and the method of making same is likewisesimple and Well adapted for the purpose described.

What I claim as my invention is:

1. The method of manufacturing furnace registers which consists inplacing pairs of stop strips at a plurality of points in the castingmold to weld with the adjacent metal and divide portions of the registersubjected to undue strain in shrinking during cooling of the moltenmetal forming the register.

The method of manufacturing furnace registers having a depending medialflange which consists in placing pairs of stop strips of other materialthan the material of the casting at a plurality of points in the castingmold to Weld with the adjacent metal and to divide portions of themedial flange subjected to undue strain in shrinking during cooling ofthe molten metal forming the register.

3. The method of manufacturing furnace registers having a dependingmedial annular flange which consists in placing pairs of stop strips ofother material than the material of the casting at a plurality of pointsin the casting mold to weld with the adjacent material and to divideportions of the medial flange subjected to undue strain in shrinkingduring cooling of the molten metal forming the register, and thenremoving the stop strips from the flange.

4. A new article of manufacture, comprising a cast metal furnaceregister having outer and inner lattice workformation and a medialdepending sectional rib, the adjacent end portions of said sectional ribhaving stop strips of other material than the material of the registerwelded to the said end portions and spaced apart a slight distance fromeach other.

5. A new article of manufacture, comprising a cast metal furnaceregister having outer and inner lattice Work formation and a medialdepending annular rib formed of segments, the adjacent end portions ofthe segments having stop strips .of other material than the material ofthe register Welded to the said end portions and spaced apart a slightdistance from each other.

6. A new article of manufacture, comprising a cast metal furnaceregister having an outer border and a medial depending annular flangeconnected together by both outer and inner cross portions of latticework formation, the annular flange being of segmental formation, theadjacent end portions of the segments having stop strips of othermaterial than the material of the register welded to said end portionsand spaced apart a slight distance from each other.

In testimony whereof, I afliX my signature.

CALVIN P. WOLFE.

